00986nam a22002651i 450099100046888970753620030122132923.0021010s1946 it a||||||||||||||||ita b12009556-39ule_instARCHE-009935ExLDip.to Filologia Ling. e Lett.itaA.t.i. Arché s.c.r.l. Pandora Sicilia s.r.l.704.9Praz, Mario11364Studi sul concettismo /Mario PrazFirenze :G.C. Sansoni,1946VII, 321 p. :ill. ;20 cmBiblioteca sansoniana critica ;9EmblemiSec. 15.-16.Letteratura emblematicaSec. 15.-16..b1200955628-04-1701-04-03991000468889707536LE008 FL.M. II E 8412008000162986le008-E0.00-no 01010.i1229596601-04-03Studi sul concettismo133682UNISALENTOle00801-04-03ma -itait 0103647nam 22006015 450 991033824960332120200701042303.03-030-10819-810.1007/978-3-030-10819-9(CKB)4100000008217443(MiAaPQ)EBC5776246(DE-He213)978-3-030-10819-9(PPN)236523112(EXLCZ)99410000000821744320190517d2019 u| 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierNon-Self-Adjoint Differential Operators, Spectral Asymptotics and Random Perturbations /by Johannes Sjöstrand1st ed. 2019.Cham :Springer International Publishing :Imprint: Birkhäuser,2019.1 online resource (496 pages) illustrationsPseudo-Differential Operators, Theory and Applications,2297-0355 ;143-030-10818-X The asymptotic distribution of eigenvalues of self-adjoint differential operators in the high-energy limit, or the semi-classical limit, is a classical subject going back to H. Weyl of more than a century ago. In the last decades there has been a renewed interest in non-self-adjoint differential operators which have many subtle properties such as instability under small perturbations. Quite remarkably, when adding small random perturbations to such operators, the eigenvalues tend to distribute according to Weyl's law (quite differently from the distribution for the unperturbed operators in analytic cases). A first result in this direction was obtained by M. Hager in her thesis of 2005. Since then, further general results have been obtained, which are the main subject of the present book. Additional themes from the theory of non-self-adjoint operators are also treated. The methods are very much based on microlocal analysis and especially on pseudodifferential operators. The reader will find a broad field with plenty of open problems.Pseudo-Differential Operators, Theory and Applications,2297-0355 ;14Functions of complex variablesDifferential equationsDifferential equations, PartialOperator theoryFunctions of a Complex Variablehttps://scigraph.springernature.com/ontologies/product-market-codes/M12074Several Complex Variables and Analytic Spaceshttps://scigraph.springernature.com/ontologies/product-market-codes/M12198Ordinary Differential Equationshttps://scigraph.springernature.com/ontologies/product-market-codes/M12147Partial Differential Equationshttps://scigraph.springernature.com/ontologies/product-market-codes/M12155Operator Theoryhttps://scigraph.springernature.com/ontologies/product-market-codes/M12139Functions of complex variables.Differential equations.Differential equations, Partial.Operator theory.Functions of a Complex Variable.Several Complex Variables and Analytic Spaces.Ordinary Differential Equations.Partial Differential Equations.Operator Theory.515.7246515.7246Sjöstrand Johannesauthttp://id.loc.gov/vocabulary/relators/aut351203BOOK9910338249603321Non-Self-Adjoint Differential Operators, Spectral Asymptotics and Random Perturbations1733469UNINA